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identity=mailfrom; envelope-from="sirjofri+ml-9fans@sirjofri.de"; helo=oat.nine.sirjofri.de; client-ip=5.45.105.127 Received: from oat.nine.sirjofri.de (oat.nine.sirjofri.de [5.45.105.127]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by tb-mx0.topicbox.com (Postfix) with ESMTPS for <9fans@9fans.net>; Sun, 22 Aug 2021 14:50:36 -0400 (EDT) (envelope-from sirjofri+ml-9fans@sirjofri.de) Received: from sirjofri.de ([95.90.218.213]) by oat; Sun Aug 22 20:50:34 +0200 2021 Date: Sun, 22 Aug 2021 18:50:33 +0000 (UTC) From: sirjofri To: 9fans <9fans@9fans.net> Message-ID: <220e868b-8403-4bd0-8a18-cecc308a1766@sirjofri.de> In-Reply-To: References: Subject: Re: [9fans] Drawterm GPU (was: Software philosophy) MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format="flowed" Content-Transfer-Encoding: quoted-printable X-Correlation-ID: <220e868b-8403-4bd0-8a18-cecc308a1766@sirjofri.de> Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: d9e44f3c-0379-11ec-a9d5-cdc311a19c13 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UYWQyOWJmYzIyM2RjNGZiZS1NM2MwZTc2YTBiNDM3ZGQ5MDcxYzZm?= =?UTF-8?B?NTc5Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M3c0e76a0b437dd9071c6f579:1:PbZhuDdZUpQOR-agFDq1kXA6E2M0_BLd8xP74G_SNS8 22.08.2021 20:25:12 ori@eigenstate.org: > Quoth sirjofri : >> >> 22.08.2021 18:41:06 ori@eigenstate.org: >> Basically do software rendering on the GPU? > > Yes. Or software neural net evaluation on the GPU. > Or software video decoding on the GPU. Or software > image transforms on the GPU. Or software signal > processing on the GPU. > > If there's an interface to be selected, it needs > to be tractable to implement, *and* general purpose > enough for everything that wants to use it. > >> Well, it's totally possible. Even Nanite (the new system in Unreal=20 >> Engine >> 5) has its own rasterizer and I believe even its own base pass. Also >> Lumen does software rendering for global illumination. >> >> But for serious 3d AAA stuff we'd have to consider: Lumen is for=20 >> next-gen >> GPUs and Nanite for newer GPUs. We'll never reach their quality in >> realtime if we don't use the GPU features (built-in rasterizer, ...)=20 >> to >> have enough free power for crazy software calculation. > > By the time any code is written, next-gen GPUs will be > previous-gen GPUs. > > General compute is what any hardware you buy a few years > from now will be doing -- and it's far more intersting > in terms of what capabilities it allows. > >> I like that /dev/compute approach, but may I suggest putting it below >> another directory /dev/gpu/compute so we have the ability to add >> /dev/gpu/{vertex,geometry,fragment,tessellation,pixel} later? > > I think supporting those is a cost we should not pay. It's > fundamentally solving a less general problem, and adds a > lot of complexity for the potential of a small performance > boost. > > We already have zero people sinking time into the slim > interface; sinking time into a fatter interface seems > like a bad idea. Gotcha. Maybe I'll find some time to implement some kind of gpufs or /dev/gpu (if=20 it's general purpose I'd suggest renaming compute to gpu since "compute"=20 could be anything. The computer does compute, wow.). sirjofri ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tad29bfc223dc4fbe-M3c0e7= 6a0b437dd9071c6f579 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription